Re: Allow new incoming connection?

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From	Pascal Hambourg <boite-a-spam@plouf.fr.eu.org>
Newsgroups	comp.os.linux.security
Subject	Re: Allow new incoming connection?
Date	Sat, 22 Jun 2013 16:37:59 +0200
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Richard Kettlewell a écrit :
> Aragorn <thorongil@telenet.be.invalid> writes:
>> 
>> As far as I know, if there is nothing actively listening for any 
>> particular connection, the kernel will by default silently drop the 
>> packets unless otherwise specified by firewalling rules.
> 
> Pascal is correct.  It sends a RST.

In reply to TCP packets sent to a closed port, as part of the TCP
protocol. It sends an ICMP "port unreachable" in reply to UDP packets
sent to a closed port, as part of the IP protocol.

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Thread

Allow new incoming connection? buck <buck@private.mil> - 2013-06-21 18:29 +0000
  Re: Allow new incoming connection? Aragorn <thorongil@telenet.be.invalid> - 2013-06-21 20:36 +0200
    Re: Allow new incoming connection? buck <buck@private.mil> - 2013-06-22 06:46 +0000
      Re: Allow new incoming connection? Aragorn <thorongil@telenet.be.invalid> - 2013-06-22 08:53 +0200
    Re: Allow new incoming connection? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2013-06-22 14:47 +0200
      Re: Allow new incoming connection? Aragorn <thorongil@telenet.be.invalid> - 2013-06-22 15:09 +0200
        Re: Allow new incoming connection? Richard Kettlewell <rjk@greenend.org.uk> - 2013-06-22 14:27 +0100
          Re: Allow new incoming connection? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2013-06-22 16:37 +0200
  Re: Allow new incoming connection? Richard Kettlewell <rjk@greenend.org.uk> - 2013-06-21 20:01 +0100
    Re: Allow new incoming connection? buck <buck@private.mil> - 2013-06-22 06:35 +0000
      Re: Allow new incoming connection? Richard Kettlewell <rjk@greenend.org.uk> - 2013-06-22 09:39 +0100
  Re: Allow new incoming connection? David Hough <noone$$@llondel.org> - 2013-06-22 12:18 +0100
  Re: Allow new incoming connection? "Trevor Hemsley" <Trevor.Hemsley@mytrousers.ntlworld.com> - 2013-06-22 07:37 -0500
  Re: Allow new incoming connection? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2013-06-22 14:56 +0200
    Re: Allow new incoming connection? buck <buck@private.mil> - 2013-06-22 17:35 +0000
    Re: Allow new incoming connection? buck <buck@private.mil> - 2013-06-22 18:01 +0000
      Re: Allow new incoming connection? "Trevor Hemsley" <Trevor.Hemsley@mytrousers.ntlworld.com> - 2013-06-22 14:29 -0500

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